The risk of tuberculous infection in Norway.

@article{Waaler1975TheRO,
  title={The risk of tuberculous infection in Norway.},
  author={Hans Th Waaler and O U Galtung and K Mordal},
  journal={Bulletin of the International Union against Tuberculosis},
  year={1975},
  volume={50 1},
  pages={5-61}
}